Learning Mathematics for IIT JEE
Pages
Home
IIT JEE - Online Books
Saturday, December 6, 2008
Equation of the pair of tangents from a point to a parabola
Parabola equation y² = 4ax; point from which tangents are drawn is (x1,y1)
Equation is SS' = T²
S = y² = 4ax
S' = y1² = 4ax1
T = yy1 - 2a(x+x1)
No comments:
Post a Comment
Newer Post
Older Post
Home
Subscribe to:
Post Comments (Atom)

## No comments:

Post a Comment